SoftBody ignores translation when using GLES2

[cwaldren]

OS: Windows 10, 64-bit
Godot: v3.2.3 stable
Processor: AMD Ryzen 7 3700X
Graphics: GeForce RTX 2060S, Nvidia driver v460.89

While in GLES2 mode, I placed a few scene instances involving RigidBodies into another scene, translated them into various positions, and hit the play button.

Expected: the bodies should be rendered at the specified positions.

Actual: the bodies are all rendered overlapping at the origin (?) of the scene. The scene has a bit of gravity, so eventually all the bodies separate as they fall.

Workaround: Use GLES3.

This was extremely confusing and I thought I was doing something wrong for 3 or so hours, fiddling with various things to get such a basic scene working. I switched to GLES3 figuring maybe it was a bug, and the issue immediately resolved: the scene renders as expected with each RigidBody located where I placed them in the editor.

I tried to look around for other reports of this and didn't see any mention here. I see it mentions "INSTANCE_ID" but I have no idea if this is relevant.
Cell.zip

[floppyhammer]

I could reproduce this. I suppose the problem is with SoftBody as everything works fine after I changed it to a general MeshInstance. In addition, the SoftBody mesh drifts from its collision shape sibling more and more when falling even in GLES3, as shown below

[madmiraal]

As identified by @floppyhammer, this is an issue with SoftBodies and GLES2. The RigidBodies are behaving as expected.